LOS ANGELES — A father who lost his son to a fentanyl overdose is trying to prevent other families from feeling the same pain. He started a movement called Buddy Fest. 

This year, the fourth annual Buddy Fest is joining forces with the Mexica New Year Celebration. It's a powerful fusion of culture, music and a life-saving mission.

It all happens Sunday at Sycamore Grove Park in Los Angeles.